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A137630
as a simple table
n
a(n)
1
1
2
3
3
5
4
10
5
14
6
25
7
33
8
53
9
71
10
104
11
135
12
197
13
249
14
344
[1,3,5,10,14,25,33,53,71,104,135,197,249,344]